This is easily doable. What you would need to do is give the audiobooks you want to have separate a specific taxonomy (i.e. a unique tag, genre, series, or author).


Then, to add them as a BookTable to your site, just make a regular, new Page from your WP Admin panel. Then click on "Insert Shortcode" located near the "Add Media" button. 

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That will open the MBT shortcode interface. Once there, go to the MyBookTable tab and select "All books in...(whichever taxonomy you use to specify your audiobooks)". That will give you a separate page dedicated to audiobooks, like you want. Does this answer your question? Let me know if you need any more help.